Seems like it’s around the corner now…
PS: As authenticator app version 2025.6.0 and mobile app versions 2025.6.0 (iOS) / 2025.6.1 (Android) are available, the sync function can be used now as it seems… or not?! → For me, it doesn’t work yet on Android (just tried it)…
PPS: It does work now. In my case, I deleted the app data of the authenticator app (only do that when you don’t have any relevant data in there!), and after that, the authenticator app offered the sync with the next start.